• In a new Instagram post, Dr. Sandra Lee, MD—aka Dr. Pimple Popper—teased a bizarre "skin mystery" featured in her upcoming episode.• The skin condition is on a patient's hand.• Dr. Pimple Popper airs Thursday nights on TLC at 9/8c.

In a new Instagram post, Dr. Sandra Lee, MD—aka Dr. Pimple Popper—shared a teaser for the upcoming episode of her hit TLC show. "It's a SKIN MYSTERY," she wrote in the caption. "What is YOUR diagnosis and watch how a board certified dermatologist approaches treatment of a condition like this."

In the video, we see a man displaying a skin condition on his hand. "This is the strange skin I have on my hands, my fingers," he says. "As you can see, it's bumpy, flaky... It's flexible, but a little stiffer than the surrounding skin."